/Engine/Source/Runtime/Online/HTTP/Public/GenericPlatform/GenericPlatformHttp.h
Extract the Port part of a URL, or an unset object if there was non specified. Example: "http://example.org:23/" would return 23, while "https://example.org/" would return an unset object
static [TOptional](API\Runtime\Core\IO\TOptional)< uint16 > GetUrlPort ( const FStringView Url )